/*! ColVis 1.1.2
 * ©2010-2015 SpryMedia Ltd - datatables.net/license
 */

/**
 * @summary     ColVis
 * @description Controls for column visibility in DataTables
 * @version     1.1.2
 * @file        dataTables.colReorder.js
 * @author      SpryMedia Ltd (www.sprymedia.co.uk)
 * @contact     www.sprymedia.co.uk/contact
 * @copyright   Copyright 2010-2015 SpryMedia Ltd.
 *
 * This source file is free software, available under the following license:
 *   MIT license - http://datatables.net/license/mit
 *
 * This source file is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the license files for details.
 *
 * For details please refer to: http://www.datatables.net
 */

(function (window, document, undefined) {


    var factory = function ($, DataTable) {
        "use strict";

        /**
         * ColVis provides column visibility control for DataTables
         *
         * @class ColVis
         * @constructor
         * @param {object} DataTables settings object. With DataTables 1.10 this can
         *   also be and API instance, table node, jQuery collection or jQuery selector.
         * @param {object} ColVis configuration options
         */
        var ColVis = function (oDTSettings, oInit)
        {
            /* Santiy check that we are a new instance */
            if (!this.CLASS || this.CLASS != "ColVis")
            {
                alert("Warning: ColVis must be initialised with the keyword 'new'");
            }

            if (typeof oInit == 'undefined')
            {
                oInit = {};
            }

            var camelToHungarian = $.fn.dataTable.camelToHungarian;
            if (camelToHungarian) {
                camelToHungarian(ColVis.defaults, ColVis.defaults, true);
                camelToHungarian(ColVis.defaults, oInit);
            }


            /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
             * Public class variables
             * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

            /**
             * @namespace Settings object which contains customisable information for
             *     ColVis instance. Augmented by ColVis.defaults
             */
            this.s = {
                /**
                 * DataTables settings object
                 *  @property dt
                 *  @type     Object
                 *  @default  null
                 */
                "dt": null,

                /**
                 * Customisation object
                 *  @property oInit
                 *  @type     Object
                 *  @default  passed in
                 */
                "oInit": oInit,

                /**
                 * Flag to say if the collection is hidden
                 *  @property hidden
                 *  @type     boolean
                 *  @default  true
                 */
                "hidden": true,

                /**
                 * Store the original visibility settings so they could be restored
                 *  @property abOriginal
                 *  @type     Array
                 *  @default  []
                 */
                "abOriginal": []
            };


            /**
             * @namespace Common and useful DOM elements for the class instance
             */
            this.dom = {
                /**
                 * Wrapper for the button - given back to DataTables as the node to insert
                 *  @property wrapper
                 *  @type     Node
                 *  @default  null
                 */
                "wrapper": null,

                /**
                 * Activation button
                 *  @property button
                 *  @type     Node
                 *  @default  null
                 */
                "button": null,

                /**
                 * Collection list node
                 *  @property collection
                 *  @type     Node
                 *  @default  null
                 */
                "collection": null,

                /**
                 * Background node used for shading the display and event capturing
                 *  @property background
                 *  @type     Node
                 *  @default  null
                 */
                "background": null,

                /**
                 * Element to position over the activation button to catch mouse events when using mouseover
                 *  @property catcher
                 *  @type     Node
                 *  @default  null
                 */
                "catcher": null,

                /**
                 * List of button elements
                 *  @property buttons
                 *  @type     Array
                 *  @default  []
                 */
                "buttons": [],

                /**
                 * List of group button elements
                 *  @property groupButtons
                 *  @type     Array
                 *  @default  []
                 */
                "groupButtons": [],

                /**
                 * Restore button
                 *  @property restore
                 *  @type     Node
                 *  @default  null
                 */
                "restore": null
            };

            /* Store global reference */
            ColVis.aInstances.push(this);

            /* Constructor logic */
            this.s.dt = $.fn.dataTable.Api ?
                    new $.fn.dataTable.Api(oDTSettings).settings()[0] :
                    oDTSettings;

            this._fnConstruct(oInit);
            return this;
        };



        ColVis.prototype = {
            /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
             * Public methods
             * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

            /**
             * Get the ColVis instance's control button so it can be injected into the
             * DOM
             *  @method  button
             *  @returns {node} ColVis button
             */
            button: function ()
            {
                return this.dom.wrapper;
            },

            /**
             * Alias of `rebuild` for backwards compatibility
             *  @method  fnRebuild
             */
            "fnRebuild": function ()
            {
                this.rebuild();
            },

            /**
             * Rebuild the list of buttons for this instance (i.e. if there is a column
             * header update)
             *  @method  fnRebuild
             */
            rebuild: function ()
            {
                /* Remove the old buttons */
                for (var i = this.dom.buttons.length - 1; i >= 0; i--) {
                    this.dom.collection.removeChild(this.dom.buttons[i]);
                }
                this.dom.buttons.splice(0, this.dom.buttons.length);
                this.dom.groupButtons.splice(0, this.dom.groupButtons.length);

                if (this.dom.restore) {
                    this.dom.restore.parentNode(this.dom.restore);
                }

                /* Re-add them (this is not the optimal way of doing this, it is fast and effective) */
                this._fnAddGroups();
                this._fnAddButtons();

                /* Update the checkboxes */
                this._fnDrawCallback();
            },

            /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
             * Private methods (they are of course public in JS, but recommended as private)
             * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

            /**
             * Constructor logic
             *  @method  _fnConstruct
             *  @returns void
             *  @private
             */
            "_fnConstruct": function (init)
            {
                this._fnApplyCustomisation(init);

                var that = this;
                var i, iLen;
                this.dom.wrapper = document.createElement('div');
                this.dom.wrapper.className = "ColVis";

                this.dom.button = $('<button />', {
                    'class': !this.s.dt.bJUI ?
                            "ColVis_Button ColVis_MasterButton" :
                            "ColVis_Button ColVis_MasterButton ui-button ui-state-default"
                })
                        .append('<span>' + this.s.buttonText + '</span>')
                        .bind(this.s.activate == "mouseover" ? "mouseover" : "click", function (e) {
                            e.preventDefault();
                            that._fnCollectionShow();
                        })
                        .appendTo(this.dom.wrapper)[0];

                this.dom.catcher = this._fnDomCatcher();
                this.dom.collection = this._fnDomCollection();
                this.dom.background = this._fnDomBackground();

                this._fnAddGroups();
                this._fnAddButtons();

                /* Store the original visibility information */
                for (i = 0, iLen = this.s.dt.aoColumns.length; i < iLen; i++)
                {
                    this.s.abOriginal.push(this.s.dt.aoColumns[i].bVisible);
                }

                /* Update on each draw */
                this.s.dt.aoDrawCallback.push({
                    "fn": function () {
                        that._fnDrawCallback.call(that);
                    },
                    "sName": "ColVis"
                });

                /* If columns are reordered, then we need to update our exclude list and
                 * rebuild the displayed list
                 */
                $(this.s.dt.oInstance).bind('column-reorder.dt', function (e, oSettings, oReorder) {
                    for (i = 0, iLen = that.s.aiExclude.length; i < iLen; i++) {
                        that.s.aiExclude[i] = oReorder.aiInvertMapping[ that.s.aiExclude[i] ];
                    }

                    var mStore = that.s.abOriginal.splice(oReorder.iFrom, 1)[0];
                    that.s.abOriginal.splice(oReorder.iTo, 0, mStore);

                    that.fnRebuild();
                });

                $(this.s.dt.oInstance).bind('destroy.dt', function () {
                    $(that.dom.wrapper).remove();
                });

                // Set the initial state
                this._fnDrawCallback();
            },

            /**
             * Apply any customisation to the settings from the DataTables initialisation
             *  @method  _fnApplyCustomisation
             *  @returns void
             *  @private
             */
            "_fnApplyCustomisation": function (init)
            {
                $.extend(true, this.s, ColVis.defaults, init);

                // Slightly messy overlap for the camelCase notation
                if (!this.s.showAll && this.s.bShowAll) {
                    this.s.showAll = this.s.sShowAll;
                }

                if (!this.s.restore && this.s.bRestore) {
                    this.s.restore = this.s.sRestore;
                }

                // CamelCase to Hungarian for the column groups 
                var groups = this.s.groups;
                var hungarianGroups = this.s.aoGroups;
                if (groups) {
                    for (var i = 0, ien = groups.length; i < ien; i++) {
                        if (groups[i].title) {
                            hungarianGroups[i].sTitle = groups[i].title;
                        }
                        if (groups[i].columns) {
                            hungarianGroups[i].aiColumns = groups[i].columns;
                        }
                    }
                }
            },

            /**
             * On each table draw, check the visibility checkboxes as needed. This allows any process to
             * update the table's column visibility and ColVis will still be accurate.
             *  @method  _fnDrawCallback
             *  @returns void
             *  @private
             */
            "_fnDrawCallback": function ()
            {
                var columns = this.s.dt.aoColumns;
                var buttons = this.dom.buttons;
                var groups = this.s.aoGroups;
                var button;

                for (var i = 0, ien = buttons.length; i < ien; i++) {
                    button = buttons[i];

                    if (button.__columnIdx !== undefined) {
                        $('input', button).prop('checked', columns[ button.__columnIdx ].bVisible);
                    }
                }

                var allVisible = function (columnIndeces) {
                    for (var k = 0, kLen = columnIndeces.length; k < kLen; k++)
                    {
                        if (columns[columnIndeces[k]].bVisible === false) {
                            return false;
                        }
                    }
                    return true;
                };
                var allHidden = function (columnIndeces) {
                    for (var m = 0, mLen = columnIndeces.length; m < mLen; m++)
                    {
                        if (columns[columnIndeces[m]].bVisible === true) {
                            return false;
                        }
                    }
                    return true;
                };

                for (var j = 0, jLen = groups.length; j < jLen; j++)
                {
                    if (allVisible(groups[j].aiColumns))
                    {
                        $('input', this.dom.groupButtons[j]).prop('checked', true);
                        $('input', this.dom.groupButtons[j]).prop('indeterminate', false);
                    } else if (allHidden(groups[j].aiColumns))
                    {
                        $('input', this.dom.groupButtons[j]).prop('checked', false);
                        $('input', this.dom.groupButtons[j]).prop('indeterminate', false);
                    } else
                    {
                        $('input', this.dom.groupButtons[j]).prop('indeterminate', true);
                    }
                }
            },

            /**
             * Loop through the groups (provided in the settings) and create a button for each.
             *  @method  _fnAddgroups
             *  @returns void
             *  @private
             */
            "_fnAddGroups": function ()
            {
                var nButton;

                if (typeof this.s.aoGroups != 'undefined')
                {
                    for (var i = 0, iLen = this.s.aoGroups.length; i < iLen; i++)
                    {
                        nButton = this._fnDomGroupButton(i);
                        this.dom.groupButtons.push(nButton);
                        this.dom.buttons.push(nButton);
                        this.dom.collection.appendChild(nButton);
                    }
                }
            },

            /**
             * Loop through the columns in the table and as a new button for each one.
             *  @method  _fnAddButtons
             *  @returns void
             *  @private
             */
            "_fnAddButtons": function ()
            {
                var
                        nButton,
                        columns = this.s.dt.aoColumns;

                if ($.inArray('all', this.s.aiExclude) === -1) {
                    for (var i = 0, iLen = columns.length; i < iLen; i++)
                    {
                        if ($.inArray(i, this.s.aiExclude) === -1)
                        {
                            nButton = this._fnDomColumnButton(i);
                            nButton.__columnIdx = i;
                            this.dom.buttons.push(nButton);
                        }
                    }
                }

                if (this.s.order === 'alpha') {
                    this.dom.buttons.sort(function (a, b) {
                        var titleA = columns[ a.__columnIdx ].sTitle;
                        var titleB = columns[ b.__columnIdx ].sTitle;

                        return titleA === titleB ?
                                0 :
                                titleA < titleB ?
                                -1 :
                                1;
                    });
                }

                if (this.s.restore)
                {
                    nButton = this._fnDomRestoreButton();
                    nButton.className += " ColVis_Restore";
                    this.dom.buttons.push(nButton);
                }

                if (this.s.showAll)
                {
                    nButton = this._fnDomShowXButton(this.s.showAll, true);
                    nButton.className += " ColVis_ShowAll";
                    this.dom.buttons.push(nButton);
                }

                if (this.s.showNone)
                {
                    nButton = this._fnDomShowXButton(this.s.showNone, false);
                    nButton.className += " ColVis_ShowNone";
                    this.dom.buttons.push(nButton);
                }

                $(this.dom.collection).append(this.dom.buttons);
            },

            /**
             * Create a button which allows a "restore" action
             *  @method  _fnDomRestoreButton
             *  @returns {Node} Created button
             *  @private
             */
            "_fnDomRestoreButton": function ()
            {
                var
                        that = this,
                        dt = this.s.dt;

                return $(
                        '<li class="ColVis_Special ' + (dt.bJUI ? 'ui-button ui-state-default' : '') + '">' +
                        this.s.restore +
                        '</li>'
                        )
                        .click(function (e) {
                            for (var i = 0, iLen = that.s.abOriginal.length; i < iLen; i++)
                            {
                                that.s.dt.oInstance.fnSetColumnVis(i, that.s.abOriginal[i], false);
                            }
                            that._fnAdjustOpenRows();
                            that.s.dt.oInstance.fnAdjustColumnSizing(false);
                            that.s.dt.oInstance.fnDraw(false);
                        })[0];
            },

            /**
             * Create a button which allows show all and show node actions
             *  @method  _fnDomShowXButton
             *  @returns {Node} Created button
             *  @private
             */
            "_fnDomShowXButton": function (str, action)
            {
                var
                        that = this,
                        dt = this.s.dt;

                return $(
                        '<li class="ColVis_Special ' + (dt.bJUI ? 'ui-button ui-state-default' : '') + '">' +
                        str +
                        '</li>'
                        )
                        .click(function (e) {
                            for (var i = 0, iLen = that.s.abOriginal.length; i < iLen; i++)
                            {
                                if (that.s.aiExclude.indexOf(i) === -1)
                                {
                                    that.s.dt.oInstance.fnSetColumnVis(i, action, false);
                                }
                            }
                            that._fnAdjustOpenRows();
                            that.s.dt.oInstance.fnAdjustColumnSizing(false);
                            that.s.dt.oInstance.fnDraw(false);
                        })[0];
            },

            /**
             * Create the DOM for a show / hide group button
             *  @method  _fnDomGroupButton
             *  @param {int} i Group in question, order based on that provided in settings
             *  @returns {Node} Created button
             *  @private
             */
            "_fnDomGroupButton": function (i)
            {
                var
                        that = this,
                        dt = this.s.dt,
                        oGroup = this.s.aoGroups[i];

                return $(
                        '<li class="ColVis_Special ' + (dt.bJUI ? 'ui-button ui-state-default' : '') + '">' +
                        '<label>' +
                        '<input type="checkbox" />' +
                        '<span>' + oGroup.sTitle + '</span>' +
                        '</label>' +
                        '</li>'
                        )
                        .click(function (e) {
                            var showHide = !$('input', this).is(":checked");
                            if (e.target.nodeName.toLowerCase() !== "li")
                            {
                                showHide = !showHide;
                            }

                            for (var j = 0; j < oGroup.aiColumns.length; j++)
                            {
                                that.s.dt.oInstance.fnSetColumnVis(oGroup.aiColumns[j], showHide);
                            }
                        })[0];
            },

            /**
             * Create the DOM for a show / hide button
             *  @method  _fnDomColumnButton
             *  @param {int} i Column in question
             *  @returns {Node} Created button
             *  @private
             */
            "_fnDomColumnButton": function (i)
            {
                var
                        that = this,
                        column = this.s.dt.aoColumns[i],
                        dt = this.s.dt;

                var title = this.s.fnLabel === null ?
                        column.sTitle :
                        this.s.fnLabel(i, column.sTitle, column.nTh);

                return $(
                        '<li ' + (dt.bJUI ? 'class="ui-button ui-state-default"' : '') + '>' +
                        '<label>' +
                        '<input type="checkbox" />' +
                        '<span>' + title + '</span>' +
                        '</label>' +
                        '</li>'
                        )
                        .click(function (e) {
                            var showHide = !$('input', this).is(":checked");
                            if (e.target.nodeName.toLowerCase() !== "li")
                            {
                                if (e.target.nodeName.toLowerCase() == "input" || that.s.fnStateChange === null)
                                {
                                    showHide = !showHide;
                                }
                            }

                            /* Need to consider the case where the initialiser created more than one table - change the
                             * API index that DataTables is using
                             */
                            var oldIndex = $.fn.dataTableExt.iApiIndex;
                            $.fn.dataTableExt.iApiIndex = that._fnDataTablesApiIndex.call(that);

                            // Optimisation for server-side processing when scrolling - don't do a full redraw
                            if (dt.oFeatures.bServerSide)
                            {
                                that.s.dt.oInstance.fnSetColumnVis(i, showHide, false);
                                that.s.dt.oInstance.fnAdjustColumnSizing(false);
                                if (dt.oScroll.sX !== "" || dt.oScroll.sY !== "")
                                {
                                    that.s.dt.oInstance.oApi._fnScrollDraw(that.s.dt);
                                }
                                that._fnDrawCallback();
                            } else
                            {
                                that.s.dt.oInstance.fnSetColumnVis(i, showHide);
                            }

                            $.fn.dataTableExt.iApiIndex = oldIndex; /* Restore */

                            if (that.s.fnStateChange !== null)
                            {
                                if (e.target.nodeName.toLowerCase() == "span")
                                {
                                    e.preventDefault();
                                }
                                that.s.fnStateChange.call(that, i, showHide);
                            }
                        })[0];
            },

            /**
             * Get the position in the DataTables instance array of the table for this
             * instance of ColVis
             *  @method  _fnDataTablesApiIndex
             *  @returns {int} Index
             *  @private
             */
            "_fnDataTablesApiIndex": function ()
            {
                for (var i = 0, iLen = this.s.dt.oInstance.length; i < iLen; i++)
                {
                    if (this.s.dt.oInstance[i] == this.s.dt.nTable)
                    {
                        return i;
                    }
                }
                return 0;
            },

            /**
             * Create the element used to contain list the columns (it is shown and
             * hidden as needed)
             *  @method  _fnDomCollection
             *  @returns {Node} div container for the collection
             *  @private
             */
            "_fnDomCollection": function ()
            {
                return $('<ul />', {
                    'class': !this.s.dt.bJUI ?
                            "ColVis_collection" :
                            "ColVis_collection ui-buttonset ui-buttonset-multi"
                })
                        .css({
                            'display': 'none',
                            'opacity': 0,
                            'position': !this.s.bCssPosition ?
                                    'absolute' :
                                    ''
                        })[0];
            },

            /**
             * An element to be placed on top of the activate button to catch events
             *  @method  _fnDomCatcher
             *  @returns {Node} div container for the collection
             *  @private
             */
            "_fnDomCatcher": function ()
            {
                var
                        that = this,
                        nCatcher = document.createElement('div');
                nCatcher.className = "ColVis_catcher";

                $(nCatcher).click(function () {
                    that._fnCollectionHide.call(that, null, null);
                });

                return nCatcher;
            },

            /**
             * Create the element used to shade the background, and capture hide events (it is shown and
             * hidden as needed)
             *  @method  _fnDomBackground
             *  @returns {Node} div container for the background
             *  @private
             */
            "_fnDomBackground": function ()
            {
                var that = this;

                var background = $('<div></div>')
                        .addClass('ColVis_collectionBackground')
                        .css('opacity', 0)
                        .click(function () {
                            that._fnCollectionHide.call(that, null, null);
                        });

                /* When considering a mouse over action for the activation, we also consider a mouse out
                 * which is the same as a mouse over the background - without all the messing around of
                 * bubbling events. Use the catcher element to avoid messing around with bubbling
                 */
                if (this.s.activate == "mouseover")
                {
                    background.mouseover(function () {
                        that.s.overcollection = false;
                        that._fnCollectionHide.call(that, null, null);
                    });
                }

                return background[0];
            },

            /**
             * Show the show / hide list and the background
             *  @method  _fnCollectionShow
             *  @returns void
             *  @private
             */
            "_fnCollectionShow": function ()
            {
                var that = this, i, iLen, iLeft;
                var oPos = $(this.dom.button).offset();
                var nHidden = this.dom.collection;
                var nBackground = this.dom.background;
                var iDivX = parseInt(oPos.left, 10);
                var iDivY = parseInt(oPos.top + $(this.dom.button).outerHeight(), 10);

                if (!this.s.bCssPosition)
                {
                    nHidden.style.top = iDivY + "px";
                    nHidden.style.left = iDivX + "px";
                }

                $(nHidden).css({
                    'display': 'block',
                    'opacity': 0
                });

                nBackground.style.bottom = '0px';
                nBackground.style.right = '0px';

                var oStyle = this.dom.catcher.style;
                oStyle.height = $(this.dom.button).outerHeight() + "px";
                oStyle.width = $(this.dom.button).outerWidth() + "px";
                oStyle.top = oPos.top + "px";
                oStyle.left = iDivX + "px";

                document.body.appendChild(nBackground);
                document.body.appendChild(nHidden);
                document.body.appendChild(this.dom.catcher);

                /* This results in a very small delay for the end user but it allows the animation to be
                 * much smoother. If you don't want the animation, then the setTimeout can be removed
                 */
                $(nHidden).animate({"opacity": 1}, that.s.iOverlayFade);
                $(nBackground).animate({"opacity": 0.1}, that.s.iOverlayFade, 'linear', function () {
                    /* In IE6 if you set the checked attribute of a hidden checkbox, then this is not visually
                     * reflected. As such, we need to do it here, once it is visible. Unbelievable.
                     */
                    if ($.browser && $.browser.msie && $.browser.version == "6.0")
                    {
                        that._fnDrawCallback();
                    }
                });

                /* Visual corrections to try and keep the collection visible */
                if (!this.s.bCssPosition)
                {
                    iLeft = (this.s.sAlign == "left") ?
                            iDivX :
                            iDivX - $(nHidden).outerWidth() + $(this.dom.button).outerWidth();

                    nHidden.style.left = iLeft + "px";

                    var iDivWidth = $(nHidden).outerWidth();
                    var iDivHeight = $(nHidden).outerHeight();
                    var iDocWidth = $(document).width();

                    if (iLeft + iDivWidth > iDocWidth)
                    {
                        nHidden.style.left = (iDocWidth - iDivWidth) + "px";
                    }
                }

                this.s.hidden = false;
            },

            /**
             * Hide the show / hide list and the background
             *  @method  _fnCollectionHide
             *  @returns void
             *  @private
             */
            "_fnCollectionHide": function (  )
            {
                var that = this;

                if (!this.s.hidden && this.dom.collection !== null)
                {
                    this.s.hidden = true;

                    $(this.dom.collection).animate({"opacity": 0}, that.s.iOverlayFade, function (e) {
                        this.style.display = "none";
                    });

                    $(this.dom.background).animate({"opacity": 0}, that.s.iOverlayFade, function (e) {
                        document.body.removeChild(that.dom.background);
                        document.body.removeChild(that.dom.catcher);
                    });
                }
            },

            /**
             * Alter the colspan on any fnOpen rows
             */
            "_fnAdjustOpenRows": function ()
            {
                var aoOpen = this.s.dt.aoOpenRows;
                var iVisible = this.s.dt.oApi._fnVisbleColumns(this.s.dt);

                for (var i = 0, iLen = aoOpen.length; i < iLen; i++) {
                    aoOpen[i].nTr.getElementsByTagName('td')[0].colSpan = iVisible;
                }
            }
        };





        /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
         * Static object methods
         * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

        /**
         * Rebuild the collection for a given table, or all tables if no parameter given
         *  @method  ColVis.fnRebuild
         *  @static
         *  @param   object oTable DataTable instance to consider - optional
         *  @returns void
         */
        ColVis.fnRebuild = function (oTable)
        {
            var nTable = null;
            if (typeof oTable != 'undefined')
            {
                nTable = $.fn.dataTable.Api ?
                        new $.fn.dataTable.Api(oTable).table().node() :
                        oTable.fnSettings().nTable;
            }

            for (var i = 0, iLen = ColVis.aInstances.length; i < iLen; i++)
            {
                if (typeof oTable == 'undefined' || nTable == ColVis.aInstances[i].s.dt.nTable)
                {
                    ColVis.aInstances[i].fnRebuild();
                }
            }
        };


        ColVis.defaults = {
            /**
             * Mode of activation. Can be 'click' or 'mouseover'
             *  @property activate
             *  @type     string
             *  @default  click
             */
            active: 'click',

            /**
             * Text used for the button
             *  @property buttonText
             *  @type     string
             *  @default  Show / hide columns
             */
            buttonText: 'Show / hide columns',

            /**
             * List of columns (integers) which should be excluded from the list
             *  @property aiExclude
             *  @type     array
             *  @default  []
             */
            aiExclude: [],

            /**
             * Show restore button
             *  @property bRestore
             *  @type     boolean
             *  @default  false
             */
            bRestore: false,

            /**
             * Restore button text
             *  @property sRestore
             *  @type     string
             *  @default  Restore original
             */
            sRestore: 'Restore original',

            /**
             * Show Show-All button
             *  @property bShowAll
             *  @type     boolean
             *  @default  false
             */
            bShowAll: false,

            /**
             * Show All button text
             *  @property sShowAll
             *  @type     string
             *  @default  Restore original
             */
            sShowAll: 'Show All',

            /**
             * Position of the collection menu when shown - align "left" or "right"
             *  @property sAlign
             *  @type     string
             *  @default  left
             */
            sAlign: 'left',

            /**
             * Callback function to tell the user when the state has changed
             *  @property fnStateChange
             *  @type     function
             *  @default  null
             */
            fnStateChange: null,

            /**
             * Overlay animation duration in mS
             *  @property iOverlayFade
             *  @type     integer|false
             *  @default  500
             */
            iOverlayFade: 500,

            /**
             * Label callback for column names. Takes three parameters: 1. the
             * column index, 2. the column title detected by DataTables and 3. the
             * TH node for the column
             *  @property fnLabel
             *  @type     function
             *  @default  null
             */
            fnLabel: null,

            /**
             * Indicate if the column list should be positioned by Javascript,
             * visually below the button or allow CSS to do the positioning
             *  @property bCssPosition
             *  @type     boolean
             *  @default  false
             */
            bCssPosition: false,

            /**
             * Group buttons
             *  @property aoGroups
             *  @type     array
             *  @default  []
             */
            aoGroups: [],

            /**
             * Button ordering - 'alpha' (alphabetical) or 'column' (table column
             * order)
             *  @property order
             *  @type     string
             *  @default  column
             */
            order: 'column'
        };



        /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
         * Static object properties
         * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

        /**
         * Collection of all ColVis instances
         *  @property ColVis.aInstances
         *  @static
         *  @type     Array
         *  @default  []
         */
        ColVis.aInstances = [];





        /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
         * Constants
         * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

        /**
         * Name of this class
         *  @constant CLASS
         *  @type     String
         *  @default  ColVis
         */
        ColVis.prototype.CLASS = "ColVis";


        /**
         * ColVis version
         *  @constant  VERSION
         *  @type      String
         *  @default   See code
         */
        ColVis.VERSION = "1.1.2";
        ColVis.prototype.VERSION = ColVis.VERSION;





        /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
         * Initialisation
         * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

        /*
         * Register a new feature with DataTables
         */
        if (typeof $.fn.dataTable == "function" &&
                typeof $.fn.dataTableExt.fnVersionCheck == "function" &&
                $.fn.dataTableExt.fnVersionCheck('1.7.0'))
        {
            $.fn.dataTableExt.aoFeatures.push({
                "fnInit": function (oDTSettings) {
                    var init = oDTSettings.oInit;
                    var colvis = new ColVis(oDTSettings, init.colVis || init.oColVis || {});
                    return colvis.button();
                },
                "cFeature": "C",
                "sFeature": "ColVis"
            });
        } else
        {
            alert("Warning: ColVis requires DataTables 1.7 or greater - www.datatables.net/download");
        }


// Make ColVis accessible from the DataTables instance
        $.fn.dataTable.ColVis = ColVis;
        $.fn.DataTable.ColVis = ColVis;


        return ColVis;
    }; // /factory


// Define as an AMD module if possible
    if (typeof define === 'function' && define.amd) {
        define(['jquery', 'datatables'], factory);
    } else if (typeof exports === 'object') {
        // Node/CommonJS
        factory(require('jquery'), require('datatables'));
    } else if (jQuery && !jQuery.fn.dataTable.ColVis) {
        // Otherwise simply initialise as normal, stopping multiple evaluation
        factory(jQuery, jQuery.fn.dataTable);
    }


})(window, document);

